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TRANSCRIPT
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VELUX Daylight Symposium Bilbao 1 May 2007
Daylight + Schools = Health +
Learning + Sustainability
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VELUX Daylight Symposium Bilbao 2 May 2007
VELUX Daylight Symposium Bilbao
Session LeaderJames R Benya, PE, FIES, FIALD, LCBenya Lighting DesignPortland, OR USAUniversity of CaliforniaDavis, CA USA
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VELUX Daylight Symposium Bilbao 3 May 2007
Programme09:00 Welcome
09:10 “Daylight + Schools = Health + Learning + Sustainability” - James R. Benya (USA)Principal of Benya Lighting Design, Architectural Lighting and Daylighting Designers and Consultants
09:35 “Health, architecture and the sun” - Richard Hobday (GB) Consulting Engineer, Researcher, Lecturer and Author
10:00 “Daylighting and Student Performance” – Lisa Heschong (USA) Consulting Architect, Principal of Heschong Mahone Group
10:45 Coffe break + discussion
11:45 Sonderschule Schwechat (school for disabled children) (A) Presentation by Hemma Fasch (A) Architect, Fasch & Fuchs Architects, Vienna
12:10 Daylight evaluation by Christian Vogt (CH)Principal of Vogt & Partner, Lighting Consultant
12:35 User evaluation by Ingeborg Schramm, (A)Director, Sonderschule Schwechat
13:00 Discussion + recap – Jim Benya
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VELUX Daylight Symposium Bilbao 4 May 2007
Renaissance in School Daylight Design
Schools daylighted of necessity
Electric lighting becomes commonplace
Fluorescent lighting at 40 w/m2+
Windows eliminated to save energy; lighting at20 w/m2
Daylight reintroduced; lighting at 12 w/m2
Daylighting use increases; lighting at 9 w/m2
1900
1930
1960
1980
2000
2006
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VELUX Daylight Symposium Bilbao 5 May 2007
Forces of Change
• Energy and Environment• Human Health• Human Productivity• Opportunities for New Architecture
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VELUX Daylight Symposium Bilbao 6 May 2007
Energy + Environment
Conventional School500,000 BTU/m2/year
Daylighted School300,000 BTU/m2/year or
less50% lower power
demand
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VELUX Daylight Symposium Bilbao 7 May 2007
The Sidwell Friends SchoolWashington DC USA 38ºN - LEED Platinum
• Aggressive daylighting in new and existing wings• Natural ventilation and ceiling fans to minimize HVAC• Automatic daylight dimming • PIER 4.5 Lighting System
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VELUX Daylight Symposium Bilbao 8 May 2007
The Chartwell SchoolSeaside, California USA 36ºN - LEED Platinum*
• Net Zero Electricity with On site PV generation• Windows, skylights, clerestories, tubular daylighting devices• Natural ventilation, passive cooling
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VELUX Daylight Symposium Bilbao 9 May 2007
The Chartwell SchoolSeaside, California USA
Classrooms• Each classroom has
at least two types of daylighting– Windows– Skylights– Clerestories
• Automatic daylight dimming
• PIER 4.5 classroom lighting system
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VELUX Daylight Symposium Bilbao 10 May 2007
Human Health
• Circadian Rhythms• Vitamin D Synthesis
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VELUX Daylight Symposium Bilbao 11 May 2007
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VELUX Daylight Symposium Bilbao 12 May 2007
Circadian Rhythms
Bright Days• Exposure to blue (465
nm) radiation• At beginning of waking
cycle• For at least 30 minutes at
>2500 lux white equivalent
• On going exposure throughout waking cycle
Dark Nights• Little or no exposure to
blue radiation• At beginning and through
the sleeping cycle• Dark sleeping
environment
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VELUX Daylight Symposium Bilbao 13 May 2007
Circadian Health Bright Days• Lifestyle changes include
early morning exposure to natural or electric light >2500 lux
• Building design to achieve interior light levels >500 lux most of the day
• Supplemental lighting >2500 lux in near-polar climates might be considered for break and exercise areas
Dark Nights• Lifestyle changes include
avoiding white and blue-rich light ~12 hours after start of the waking cycle (including TV and computer)
• Building design to achieve interior light levels
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VELUX Daylight Symposium Bilbao 14 May 2007
Vitamin D Synthesis
• Suggested as critically necessary for immune system performance
• Requires skin exposure to UV-A and UV-B• 10-15 minutes of exposure at summer
outdoor light levels• Atmospheric UV decreases in winter• Unusable low amounts of winter UV at
latitudes >40 degrees
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VELUX Daylight Symposium Bilbao 15 May 2007
Vitamin D Synthesis
Design Response• Facilities that
encourage daily outdoor exposure
• Consider providing access to UV generation or Vitamin D Supplements
Lifestyle Response• Daily skin exposure to
natural light at outdoor levels
• For near polar climates, consider winter Vitamin D supplements or exposure to UV sources
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VELUX Daylight Symposium Bilbao 16 May 2007
Learning and Productivity
• Daylighted classrooms have higher student test scores (Heschong Mahone Group – PIER Report)
• European standards for office building design
• LEED Environmental Quality standards
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VELUX Daylight Symposium Bilbao 17 May 2007
Opportunities for New Architecture
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VELUX Daylight Symposium Bilbao 18 May 2007
Opportunities for New Architecture
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VELUX Daylight Symposium Bilbao 19 May 2007
Opportunities for New Architecture
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VELUX Daylight Symposium Bilbao 20 May 2007
Opportunities for New Architecture
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VELUX Daylight Symposium Bilbao 21 May 2007
The Benefits of Daylight
For the Environment• 25-100% less energy useFor the Student• Better learning, better healthFor the School• Happier and healthier students and facultyFor the Earth• A better future
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VELUX Daylight Symposium Bilbao 22 May 2007
Any Questions
?
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VELUX Daylight Symposium Bilbao 23 May 2007
I’m done